Technical note: the effect of midshaft location on the error ranges of femoral and tibial cross-sectional parameters

0335698 - ÚBO 2011 RIV US eng J - Journal Article
Sládek, Vladimír - Berner, M. - Galeta, P. - Friedl, L. - Kudrnová, Š.
Technical note: the effect of midshaft location on the error ranges of femoral and tibial cross-sectional parameters.
American Journal of Physical Anthropology. Roč. 141, č. 2 (2010), s. 325-332. ISSN 0002-9483. E-ISSN 1096-8644
R&D Projects: GA ČR GA206/09/0589
Institutional research plan: CEZ:AV0Z60930519
Keywords : biomechanical analysis * cross-section * femora * tibiae * error range
Subject RIV: AC - Archeology, Anthropology, Ethnology
Impact factor: 2.693, year: 2010

We examine the effect of inaccurately located Fe and Ti midshafts on estimation of geometric properties. The error ranges were compared on 30 Fe and Ti. Cross-sections were obtained at each 1% interval from 60% to 40%, 5% of deviation from midshaft was used as the maximum acceptable error. Reliability was expressed by mean percentage differences, standard deviation of percentage differences, mean percentage absolute differences, limits of agreement, and mean accuracy range (MAR). On average, Ti CA and Fe I are the least sensitive to positioning error, with MAR wide enough for practical application in fragmentary specimens (MAR = 40--130 mm). In contrast, Ti I are the most sensitive to error in midshaft location (MAR = 14--20 mm). Individuals present significant variation in morphology and thus in error ranges for different properties. For damaged fossil Fe and Ti we recommend carrying out additional tests to better establish specific errors associated with uncertain length estimates.
Permanent Link: http://hdl.handle.net/11104/0180091